21009+3900

  • Unique Name: 21009+3900SEI1365
  • RA: 21 00 48.52
  • Dec: +38 59 44.0
  • Discoverer: SEI
  • Discoverer Number: 1365
  • Components:
  • First year: 1895
  • Last year: 2011
  • Observations: 6
  • First position angle: 270
  • Last position angle: 263
  • First separation: 17.4
  • Last separation: 18.3
  • Mag first component: 11.4
  • Mag second component: 11.9
  • Spectral type:
  • Primary proper motion RA: 7
  • Primary proper motion DEC: 15
  • Secondary proper motion RA: -1
  • Secondary proper motion DEC: -3
  • Durchmusterung:
  • Notes: